sasgen



M. J. SASGEN.

ATTACHMENT FOR DERRICKS OF THE WHEELBARROW TYPE.

I APPLICATION FILED APR. I4. I913- ww'm.

Patented Aug. 1, 1916.

4 SHEETS-SHEET 1 I I N 7. .v

' MJLSASGEN. ATTACHMENT FOR DERRICKS OF THE WHEELBARROW TYPE.

APPLICATION FILED APR. 14. I9T3- 1L ,1 93mm. Patented Aug. 1,1916.

4 SHEETSSHEET z.

M. J. SASGEN.

ATTACHMENT FOR DERRICKS OF THE WHEELBARROW TYPE.

APPLICATION FILED APR-I4. I913- Lwfi,?4h PtentedAug. 1,1916.

4 SHEETS-SHEET 3.

M. J. SASGEN.

ATTACHMENT FOR DERRICKS OF THE WHEELBARROW TYPE.

APPLICATION FILED APR. 14. I9l3.

1 1 93,0?4. Patented Aug. 1, 1916.

4 SHEETSSHEET 4.

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Midme Js g unrrnn erarrne rnranr ora ion.

MICHAEL J. SASGEN, OF CHICAGO, ILLINOIS; ASSIG-IQ'OB TO SASGEH DERRICKCOMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

ATTACHMENT F013 DERRICKS OF THE WHEELBABROW TYPE.

moaora.

Specification of Letters Patent.

Patented Aug. 1, 1916..

Application filed April 14, 1913. Serial No. 7 1,007.

To all whom it may concern Be it known that I, MICHAEL J.

Chicago, in the county of Cook and State of Illinois, have inventedcertain new and useful Improvements in Attachments for Der-. ricks ofthe Wheelbarrow Type, of which the following is a specificatio Thepresent inventlon relates more part1cularly to that type of derrickscommonly known as builders derricks, and to that class of buildersderricks which has the;

a wheelbarrowderrick and is more particuboom so supported upon the mastas to permit the boom to be swung completely about ploying companionbooms extending indivergent relation from the mast so that a load can beraised by means ofo'ne of the booms and a second load loweredsimultaneously with the raising of the first mentioned load through theinstrumentalities of the second boom. Derricks of this character areusually termed a wheelbarrow derrick, although this as well as any ofthe other above mentioned terms should not be construed as anylimitation upon the scope of the invention.

One of the objects of the invention isto provide a pivotal mounting forthe booms upon the mast, thus enabling the booms to be swung completelyabout the mast.'

Further objects are to provide an attachment giving a pivotal connectionbetween the upper end of the mast and boom; to arrange such connectionto have it receive and retain the adjoining inner ends of the boom arms;and to further arrange said connection so as to enable it to furnish amounting for sheave members.

In the drawings: Figure 1 is a perspective of the derrick of the presentinvention in operative position; Fig. 2 a side elevation of saidderrick; Fig. 3 a cross section of the drum together with its operatingand con- .trolling members and the mechanism for reof the mast; Fig. 8 asectional detail of the I upper portion of the mast and the innerSnsonn, a citizen of the United States, residing at;

portion of the booms; and Fig. 9 a perspectwo of the member for lockingthe driving gears for the drum in position.

This invention as previously stated relates to a derrick usedprincipally in the construction of buildings and is of that type whichis intended and adapted to be moved from floor to floor as the buildingoperation progresses. The particular type of derrick to which thepresent invention is more particularly directed is of that style usuallytermed larly adapted for hoisting brick, mortar, etc, from the ground tothe floor of the building. As is well known to those versed in the artto which the present invention relates by using a double boomed derrickfor work of this nature a loaded wheelbarrow or other receptacle can beraised simultaneously with the lowering of an empty barrow orreceptacle.

The present invention therefore deals more particularly with a derrickof the above properties and the primary object is to so arrange thevarious working parts comprising the derrick as to make the same simpleand strong of construction and adapted to be easily and readily operatedby a single workman, all of the controlling and operating parts of thederrick being collected and grouped together so as to be within easyreach of the operator.

Referring now to the drawmgs, and particularly to Fig. 1 the derrick asthere illustrated comprises a base member 10 of suitable construction.The form illustrated comprises companion beams arranged in the form of across. Any suitable means may be employed for lockingthis base to thefloors or rafters or other portions of the structure with which thederrick is being used. Arising'from the base 10 is a mast 11 which maybe of any suitable size, form and material, and which in theconstruction shown is made of tubular metal. Braces 12 are utilized forconnecting and bracing the mast with respect to the base, and theconnections 13 between these braces and the'mast are of a removablenature, enabling the mast to be disconnected from the base, if it be sodesired.

Companion divergently arranged booms 14 and 15 are provided, eachconsisting of a top section 16, a rear section 17 and a diagonallydisposed connecting section 18 extending from the outer endof the topsection to the lower -end ofthe rear section.

In the case 'of derricks of the type illustrated in the drawings; thatis, wheelbarrow derricks, therewill be two of these booms employed asshown,"each-of which is similar Y inconstruction and m'aybe of anysuitable size, shape or material.

In the construction shown, a casting or member 19is provided which ismounted upon the upper end of the mast 11 and as will be readilyunderstood by referring to Fig.8, is adapted to revolve about the upperend of the mast. In the construction shown a set screw 21 is providedwhich is intended to prevent lateral displacement between the casting 19and the upper end of the mast. Mounted in the casting 19, as will beseen by referring to Fig. 7 are companion sheaves or pulleys 22, one forthe boom 14 and one for the boom 15. The casting 19 is so formed thatthe sheaves carried thereby will be positioned parallel to the arms ofthe boom with which they are associated.

The lower ends of the sections 17 and 18 of the booms are attached to alug 23 secured to, or formed integral with, a sleeve 24 which is mountedtorevolve about the mast 11 as will be clearly understood from Figs. 2and 3. The sections 18 are detachably connected to the lugs 23, and adetachable connection is preferably provided as at 25 between themembers 17 casting 19 and members 16 of the booms. Thus by loosening theconnec tions 25 and the connections 26 between the sleeve 24 and themembers 17 and 18, the

members 16 and 18 can be detached, which is a further advancement towardrendering the derrick of a knockdown construction.

A cable 27 is provided which in the construction shown, is in the formof a chain,

although in theclaims and elsewhere where the word cable is used it isintended that the word be given its usual broad significance embracingropes of hemp or steel, etc. This cable passes over the pulleys 22 andone end of said cable depends'from a pulley 28 attaehedto the outer endof the boom 15 and the other end of the cable depends from a pulley 29attached'to the outer end of the boom 14. The cable encircles a drum 30and if the cable be in the form of a chain, as in the'constructionshown, the drum may be provided with recesses 31 so as to enable thechain to effectively contact the surface of the drum, thus insuring thatthe cable will to cover all structures which may be used for receivingand paying out a cable whether the cable be in the form of a chain orother style.

The drum is mounted upon a shaft or spindle 32, best shown perhaps inFig. 3 andthis shaft 32 is mounted in a bracket plate-like casting 33,secured to the ring 24 by bolts 34 or other suitable locking members. Inthe construction shown the drum 30 has cast integrally therewith aratchet surface 35 and has also cast therewith a gear 36. Suitable ringsor washers 37 are provided for holding the drum, gear and ratchetagainst lateral movement with respect to the shaft 32.

The plate like casting 33 is provided in the construction shown with alug or enlargement 38 to which is attached a dog 39 arranged to coactwith the teeth of the ratchet 35 and control the drum against backwardrotation while the load is being hoisted. The dog 39 is pivotallyattached to the lug 38 and is provided with a double acting face as willbe understood from Fig. 1, so that the dog can be swung from one side toanother whereby it may be positioned in proper position to operate nomatter in which direction the drum is rotating; that is to say when thedirection of rotation of the drum is reversed the dog can be thrown tothe opposite position where it will then be effective.

The gear 36 may be termed the driven gear of the drum and I provide inthe construction illustrated two gears 40 and 41 either of which may actas a driving gear for the gear 36. The gears 40 and 41 are arranged upona shaft 42 which is mounted to have a sliding and a rotary movementwithin lugs 43 which lugs are a portion of the bracket plate 33 as willbe clearly understood from Figs. 2, 3 and 6. The gears 40 and 41 arespaced apart upon the shaft 42 so that only one of said gears can be inmesh at one time with the gear 36.

With the parts in the position shown in -Fig. 6 the gear 41 is operatingas a driving gear and the gear 36 and drum 30 are being rotated in thedirection of the arrow shown in this figure, but if a reversal of thedirection of movement of said gear 36 and drum is desired, then theshaft 42 is shifted to bring the gear 40 into mesh with the gear '36.

By this arrangement the direction of rotation of the gear 36 can bereversed and at the same time movement of the shaft 42 in the samedirection is maintained. This shaft 42 is operated by crank arms 44 orother suitable devices which may be termed the operating members for thedrum.

In order to lock the gears 40 and 41 in their shifted positions a latchmember 45 is provided, best shown in Fig. 9, and this member is formedwith a stem 46 mounted within a suitable lug or bearing 47 on the plate33 and the acting end of said latch is grooved as at 47 to allow it topartially embrace the shaft 42. The latch as shown is pivotally mountedand can be thrown from one side to the other. Its operation will bereadily understood by referring to Fig. 6, in which figure it is shownas being disposed between one of the lugs 43 and the inner face of thegear 40, thus locking this gear out of mesh with the gear 36 and holdingthe gear 41 in mesh with thegear 36. With the latch in this position asliding movement of the shaft 42 is impossible and hence the lockingaction above referred to is es-' tablished.

In order to revolve the mast about the boom I provide a rack surface 49,best shown in Figs. 3, 5, and 6, and by referring to Fig. 3 it will beseen that the rack is fixedly attached to a ring or collar 50surrounding the mast 11 and locked to such collar by a pin 50, as shownin Fig. 3, or otherwise. Said ring may be said in fact to be a part andparcel of the mast itself. A stem 51 is revolubly mounted within asleeve 52 which is a part of the plate 33 and on one end of the stem 51is a handle 53 and on the other end a pinion 54 meshing with the gear49, thus the stem 51, pinion 54, and handles 53, are adapted to revolvein unison with the revolutionary movements of the booms since they areall connected to the plate 33 and the plate 33 in turn is connected tothe ring 24 to which the booms are attached.

By revolving the handle 53 the pinion 54 will revolve and ride over thesurface of the rack 49 thus causing the plate 33 with all parts carriedthereby, together with the ring 24 and the booms 14 and 15, to berevolved about the mast. By this method of revolving the booms it isobvious that the booms can be swung to any position desired and in anaccurate manner. The danger of giving too great or too little swingingmovement to the booms is eliminated because of the fact that the pinion54 and rack 49 will cotiperate in a manner to enable the operator toeasily control the distance of movement of the boom. In order to lockthe booms against revolution while the loads are being raised andlowered, I' provide a split ring 55 secured to the plate 33 and saidsplit ring is drawn into engagement or loosened from engagement with themast or a portion affixed to the mast through the instrumentalities ofan eccentrically pivoted lever 56.

From the foregoing description it will be seen that there is provided adrum, a dog and ratchet control for the drum, a means for reversing thedirection of rotation of a drum, a means for locking the drivingmechanism for the drum in position, a means for operating the drum,means for revolving the booms about the mast and means for locking thebooms against revolution about the mast, which means are all collectedand arranged in close proximity to one another, thus enabling the personoperating the crank arm 44 to easily, readily and quickly control all ofthe movements necessary to operate the derrick and in fact thesemechanisms above listed are so compactly and conveniently arranged withrespect to one another that they may be all carried upon a singlecasting of the nature of the casting 33 if so desired. The plate 33 canbe readily removed from the ring 24 and the ring 24 can in turn beslipped off from the mast 11, so that the entire derrick structure canbe taken apart and easily packed for storing or hauling from place toplace.

The operation will be readily understood from the foregoing description,but briefly is as follows. Assuming the parts to be in the positionshown in Fig. 1, and assuming that the empty wheelbarrow there shown isto be lowered and a loaded wheelbarrow pulled up, the operator willgrasp one of the cranks 44 and rotate it, which will retate the shaft42, the pinion 41, pinion 36 and drum 30, thus moving that portion ofthe cable depending from the sheave 29 upward and lowering that portionof the cable depending from the sheave 28. While this is being done thedog 39 will be in engage ment with the teeth of the ratchet 35 toprevent any backward slipping of the drum in case the operator shouldlose control of the crank 44. During this operation the looking ring 55is preferably in locking position so as to prevent any revolutionarymovement of the booms about the mast at this time, which will be highlyundesirable owing to the swaying that would be incident to the raisingand lowering of the load, due to the operator exerting a pull upon thehandle 44, which is located to one side of the mast, that would belikely to turn or swing the booms about the mast, by his actions, if thesame were not locked. After the load has been raised the desired heightthe lock 55 is loosened by movement of the lever 56 and the handle 53 isturned to swing the boom into the position desired to deliver the load.After this has been done the latch 45 is moved out of locking position,the shaft 42 shifted and the gear 40 brought into mesh with the gear 36.The dog 39 is thrown over and the direction of rotation of the drum isreversed, although the crank 44 continues to be turned in the samedirection, the empty barrow or receptacle is thus lowered and the fullbarrow on the other side raised, thus carrying out the operationpreviously described except that the direction of the drum is of coursereversed. It will thus be seen that the derrick is entirely capable ofbeing operated by a single person without any inconvenience or danger.

shown in Fig. 1, a cross brace 60 is provided .Which is connected bysuitable meanseither to the cross bars 16 ofthe booms,

or to a sheave frame 61, shown in Figs. 1

' 5 and 2; This sheave framecomprises an ex- 7 tended portion (32, towhich are attached the 7 center ends of thebars 16 and 180i the booms,and is formed With a frame portion 63in; which is mounted asheave 28.This V single" casting therefore serves the function of amounting forthe sheaVes,-a frame for connecting the outer'ends of the top and[diagonally disposed portions of the boom 1 and further ifdesired'serv'esas an attaching means for the cross brace-'60. Y 1

Iclaim: e

1. An attachment for derricks of the Wheelbarrow type, comprising amember having a central portion adapted to be 20 revolublysecured to theupper end of a -mast, companion arm-like members ar ranged one to eachside of the central portion of said member and extending outward indivergent relation to one another, and

' eompanionarm-like members arranged on 'each side of the centralportion of said member and extending outward in divergent relation toOIIGitIlOtllGl', and adapted to re celve the inner ends of booms, saidmember 'beingformed' with companion openings, one lymg to the rear ofeach of said arms and extending parallel to the arm with which it 1sassoclated, and a sheave mountlng ad- *jacent each of said openings,substantially as described.

M. J. SASGEN.

Witnesses WM. P. BOND,

EPHRAIM BANNING.

Gopisbf this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, i Washington, D. 0.

